CN107317344B - A kind of generating set forced power oscillation investigation Optimum Experiment method - Google Patents
A kind of generating set forced power oscillation investigation Optimum Experiment method Download PDFInfo
- Publication number
- CN107317344B CN107317344B CN201710618287.8A CN201710618287A CN107317344B CN 107317344 B CN107317344 B CN 107317344B CN 201710618287 A CN201710618287 A CN 201710618287A CN 107317344 B CN107317344 B CN 107317344B
- Authority
- CN
- China
- Prior art keywords
- oscillation
- valve
- power
- test
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000010355 oscillation Effects 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000002474 experimental method Methods 0.000 title claims abstract description 10
- 238000011835 investigation Methods 0.000 title abstract description 7
- 238000012360 testing method Methods 0.000 claims abstract description 113
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000005457 optimization Methods 0.000 claims abstract description 8
- 238000004088 simulation Methods 0.000 claims abstract description 7
- 238000004458 analytical method Methods 0.000 claims abstract description 5
- 238000004451 qualitative analysis Methods 0.000 claims abstract description 4
- 238000004445 quantitative analysis Methods 0.000 claims abstract description 4
- 238000012986 modification Methods 0.000 claims description 17
- 230000004048 modification Effects 0.000 claims description 17
- 238000013016 damping Methods 0.000 claims description 13
- 238000012790 confirmation Methods 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 11
- 230000005284 excitation Effects 0.000 claims description 9
- 238000005094 computer simulation Methods 0.000 claims description 7
- 238000010998 test method Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 4
- 230000001914 calming effect Effects 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 230000004044 response Effects 0.000 description 11
- 238000009499 grossing Methods 0.000 description 10
- 230000033228 biological regulation Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
Abstract
The present invention provides a kind of generating set forced power oscillation investigation Optimum Experiment method, it is characterised in that: the following steps are included: S1: checking to a variety of causes that may cause oscillation of power, finally primarily determined the main reason for causing oscillation of power；S2: checking process by setting, based on qualitative analysis, successively carries out quantitative analysis for reason respectively, specifies a variety of causes oscillation and participates in the factor；S3: carrying out optimization for various oscillation reasons respectively, in conjunction with field test, simulation analysis further oscillation-damped source.Not only reach reproduction oscillation purpose but also reached optimization set speed adjustment system control logic purpose, farthest reduce a possibility that forced power oscillation occurs for subsequent unit.
Description
Technical field
The invention belongs to electric system simulation modeling technique field, in particular to a kind of generating set forced power oscillation row
Look into Optimum Experiment method.
Background technique
In recent years, multiple low-frequency oscillation event has occurred in global power system, and large-area power-cuts is even caused when serious
Accident.The mechanism of low-frequency oscillation is always the hot spot of industry research, wherein what is proposed and be widely accepted earliest is negative damping reason
By.It is low-frequency oscillation mechanism study that it, which carries out analysis forced power oscillation principle to oscillation of power with the concept of damping torque,
Another theoretical result, its proposition are based on resonance principle.In the power system, when original machine power is disturbed by durations
When, the generator amature equation of motion can generate the unattenuated particular solution of constant amplitude, when forcing frequency and system frequency are close
When, significantly steady state power fluctuation can be caused.
Summary of the invention
Of the invention is to provide a kind of generating set forced power oscillation investigation Optimum Experiment method.
The present invention is implemented with the following technical solutions: the present invention provides a kind of generating set forced power oscillation investigation optimization
Test method, it is characterised in that: the following steps are included: S1: a variety of causes that may cause oscillation of power is checked, finally
The main reason for causing oscillation of power is primarily determined；S2: by setting check process, based on qualitative analysis, respectively according to
It is secondary to carry out quantitative analysis for reason, it specifies a variety of causes oscillation and participates in the factor；S3: carry out respectively for various oscillation reasons excellent
Change, in conjunction with field test, simulation analysis further oscillation-damped source.
By testing above, reaches following purpose: (1) determining that the valve flow characteristic goodness of fit reduces increased additional increasing
Benefit, and further assess and determine its percentage contribution to negative damping；(2) when valve (pitch) discharge characteristic goodness of fit is poor, weight
New amendment valve flow characteristic (management valve program)；(3) it under the premise of the valve flow characteristic goodness of fit is preferable, determines and causes unit
The gain of speed control channel control logic (pressure correcting coefficient) critical value of oscillation of power, and further assessment determines it to negative damping
Percentage contribution；(4) it after all settings (management valve program, pressure correcting coefficient) are fixed, reappraises unit and once adjusts
Frequency performance；(5) set state is combined, the test of set speed adjustment system dynamic modeling is carried out；(6) in the subsequent shutdown of unit,
Carry out set speed adjustment static system modeling.
The present invention has not only reached reproduction oscillation purpose but also has reached optimization set speed adjustment system control logic purpose, maximum
Reduce to degree a possibility that forced power oscillation occurs for subsequent unit.
Detailed description of the invention
Fig. 1 is correlation test implementation process schematic diagram.
Fig. 2 primary frequency modulation frequency difference-function of load schematic diagram.
Specific embodiment
Explanation is further explained to the present invention in the following with reference to the drawings and specific embodiments.
The present invention provides a kind of generating set forced power oscillation investigation Optimum Experiment method comprising following steps: S1:
The a variety of causes that may cause oscillation of power is checked, has finally primarily determined the main reason for causing oscillation of power；S2:
Process is checked by setting, based on qualitative analysis, successively carries out quantitative analysis for reason respectively, specifies a variety of causes vibration
Swing the participation factor；S3: carry out optimization respectively for various oscillation reasons, further eliminated in conjunction with field test, simulation analysis
Vibrate source.
S3 the following steps are included:
S31: determining that the valve flow characteristic goodness of fit reduces increased additional gain, and further assessment determines it to negative resistance
The percentage contribution of Buddhist nun；S32: when the valve flow characteristic goodness of fit is poor, valve flow characteristic is corrected again
S33: under the premise of the valve flow characteristic goodness of fit is preferable, determine that the speed control channel control for causing power of the assembling unit oscillation is patrolled
Gain: critical value is collected, and further assesses and determines its percentage contribution to negative damping；
S34: after all settings are all fixed, unit primary frequency modulation performance is reappraised；
S35: in conjunction with set state, carry out the test of set speed adjustment system dynamic modeling；
S36: in the subsequent shutdown of unit, carry out set speed adjustment static system modeling.
Flow diagram shown in Figure 1 is embodied as follows:
The test of 1 valve flow characteristic
1.1 supplying thermal condition TF/ basic mode+DEH power closed-loop fashion lower valve degree of misfitting gain K test
Purpose: for test unit in the case where pitch characteristic is constant, the pitch discharge characteristic goodness of fit declines bring gain K
To low-frequency oscillation negative damping percentage contribution.
By adjusting each pitch valve position under accidental conditions, realize that each lofty tone gate valve bit instruction shakes close to power
Swing starting point value.It keeps existing pitch discharge characteristic setting numerical value constant, unit is tested in sequential valve operation, in high pitch
Inflection point vicinity, corresponding total flow instruction carry out load variations situation when valve control mode ± 1%, ± 2%, ± 5% step.?
At operation inflection point more than numerical value, following section, crosses inflection point section and carry out above-mentioned test respectively.Specific test procedure is as follows:
A) corresponding 3 total flows of high-pressure governing valve inflection point under sequence valve mode are provided by power plant and instructs (GV1/GV2 inflection point one
It causes, a corresponding flow instruction；GV3 inflection point corresponds to a flow instruction；GV4 inflection point corresponds to a flow instruction), it is assumed that be
X1%、X2%、X3%。
B) by taking total flow instruction is X1% as an example, before test, parameter when adjustment unit operating parameter to the power of the assembling unit vibrates,
It mainly include main vapour pressure, Stream temperature degree, total flow instruction is adjusted to (X1-5) % by unit vacuum, and record unit is negative after stablizing
Lotus, total flow instruction, each high pitch aperture.
C) main vapour parameter stability is maintained during testing, manual setting total flow instructs step to increase, step amount is ± 1%, ±
2%, ± 5%(changes in unit load than faster section takes smaller value, unit load change taken than more gentle section it is larger
Value), related data is recorded after stablizing；Then increase total flow instruction again, until terminating when (X1+5) %.
D) above-mentioned b, step c are repeated when total flow instruction is X2%, X3%, determines the load variations situation in the section.
E) compare the load variations situation in the range of 3 total flow instructions ± 5%, determine wherein discharge characteristic matching degree
The corresponding total flow instruction in the discharge characteristic inflection point position of a worst high pitch is the point of subsequent perturbations test.
F) test result is regarded, high pressure tune when Ying Jinhang sequential valve operation big if there is some region internal loading variable quantity
Door discharge characteristic test, if more consistent in trial stretch internal loading situation of change, it is proposed that continue to expand by test trial stretch
Greatly, it determines the load variations situation under the total flow instruction of non-inflection point, is such as not much different with the load variations situation at inflection point,
It may determine that influence of the pitch discharge characteristic to oscillation of power is smaller, crime scene discussion decides whether to carry out high pressure when sequential valve operation
The test of pitch discharge characteristic.
Test process is recorded using AO recording combination trend recording Develop Data, and AO recording is dynamic referring to speed-regulating system modeling
The setting of state pilot passageway, trend recording are actually added in conjunction with scene.Recording channel such as 1 unit dynamic test AO recording of table is surveyed
Shown in point inventory.
Table 1 is test recording channel.
Table 1
Remarks 1: the measuring point output scan period is required as far as possible no more than 50 ms, and corresponding modification group is carried out in DEH
State makes it have independent channel and is exported.
1.2 practical pitch rating curve tests
Purpose: in order to assess the goodness of fit between current pitch rating curve and practical pitch rating curve,
Determine whether that management valve program need to be adjusted on the basis of this, carries out this test.
By testing to obtain practical pitch rating curve of each high pitch of unit in sequential valve operation.Specifically
Test procedure is as follows:
A) unit is adjusted main vapour parameter to rated value with sequential valve operation before testing, and is not surpassed in guarantee first stage pressure
Total flow instruction is gradually risen to 100% under the premise of pressure, realizes 4 valve standard-sized sheets, it such as can not standard-sized sheet (the non-standard-sized sheet of GV4, then with current
Aperture is test initial value), record load, main vapour pressure, temperature, reheat heat steam pressure, temperature, first stage pressure, temperature,
The parameters such as vacuum, each high-pressure governing valve aperture, main steam flow, total flow instruction.
B) confirmation CCS remote control mode exits before test, and primary frequency modulation exits, and DEH " power control " circuit is exited.
C) pitch degree of overlapping is cut off, former pitch rating curve is made to become non-overlapping line of writing music.
D) unit " sliding pressure operation mode " exits, and main vapour pressure is controlled according to level pressure-sliding pressure operation curve, manually controls and passs
Load shedding is operated by operations staff at operator station station, with 2MW/min rate of reducing load load down, until reducing to 300MW.
E) during testing, every reduction load 30MW, stable operation of unit 10min, until 50% load terminates.In following work
Condition stable operation 20min:(1) GV4 closes entirely, GV1, GV2, GV3 standard-sized sheet；(2) GV4 is closed entirely, and GV1, GV2 standard-sized sheet, GV3 are gradually closed
Start to change to load, flow；(3) GV3, GV4 are closed entirely, GV1, GV2 standard-sized sheet；(4) GV3, GV4 are closed entirely, and GV1/GV2 is gradually
It closes to load, flow and starts to change.
F) after the test, by thermal technology personnel that the rating curve degree of overlapping under sequence valve mode in DEH configuration is extensive
It is multiple.
G) drawing order valve runs pitch rating curve.
Test process is recorded using AO recording combination trend recording Develop Data, and AO recording is dynamic referring to speed-regulating system modeling
(as shown in table 1) is arranged in state pilot passageway, and trend recording is actually added in conjunction with scene.
2 revolving speeds (or frequency) upset test
Purpose: for test unit in the case where pitch characteristic is constant, the gain of speed control channel control logic is negative to low-frequency oscillation
Damp percentage contribution.Since PI control feed-forward coefficients do not adjust, and speed control channel control logic gain is equal to PI control feedforward
The product of coefficient, pressure correcting coefficient, therefore this item test is mainly adjusted by pressure correcting coefficient, to reach adjustment revolving speed
Channel control logic gain purpose.Hereinafter reach assessment speed control channel control using adjustment " pressure correcting coefficient " mode to patrol
Gain is collected to low-frequency oscillation negative damping percentage contribution purpose.
Test is carried out respectively under supplying thermal condition TF mode, basic mode+DEH power closed-loop fashion.Test process uses
(such as table is arranged referring to speed-regulating system modeling dynamic test channel in AO recording combination DCS trend recording Develop Data record, AO recording
Shown in 1), DCS trend recording is actually added in conjunction with scene.
2.1 turbine main controls are revolving speed (or frequency) upset test that machine follows (TF) control mode
Because unit operating condition is usually based on heat supply operating condition, steam turbine follows (TF) control mode using machine under the operating condition
Realize control, it is therefore necessary to carry out under the method for operation pressure correcting coefficient to negative damping impact evaluation.
2.1.1 data acquire
Power plant thermal control personnel make 2 charts, a record point: primary frequency modulation feedforward amount, pusher side in DCS system
The non-primary part observation point such as pressure, pusher side main steam temperature, confession heat flow, power；Another kind record point: unit integrated flow rate refers to
It enables, power, GV1 to GV4 valve position, generating unit speed, the significant observations point such as grid-connected frequency.
2.1.2 test procedure
A) power plant operations staff stablizes owner and controls output integrated flow in entirely test process by adjusting sliding pressure biasing
Instruction is x1%, runs deviation positive and negative 0.5%.In the follow-up test stage, if exciting oscillation of power, integrated flow rate can be with wave
It is dynamic, not adjustment sliding pressure value intervention at this time.
B) control system parameter confirms.Temporary withdrawal primary frequency modulation, thermal control PERSONNEL RECOVERY have each correlation of the DEH of modification the later period
Parameter, especially attention pressure correcting coefficient are identical as setting value when oscillation of power.
C) power plant's thermal control personnel modify the side DEH primary frequency modulation dead zone under the personnel's monitoring and confirmation for being familiar with control logic
For initial value half, i.e., ± 0.01667Hz(1 revs/min), primary frequency modulation is put into, can observe unit by tendency chart pass through electricity
The oscillation of net frequency fluctuation exciting power, is observed the period about 20 minutes, if non-exciting power oscillation primary frequency modulation dead zone continues to zoom out
Half, i.e. dead zone are to ± 0.00833Hz(0.5 revs/min), until minimum 0.005Hz stops.
D) the above process can not effectively exciting power oscillation in the case where, thermal control personnel are in the personnel for being familiar with control logic
Under monitoring and confirmation, the revolving speed rated value by the side mandatory modification DEH primary frequency modulation slip circuit is 2998 or 3002, by turning
Can difference disturbance, observation unit pass through slip wave excitation oscillation of power.If desired revolving speed rated value maximum modification amount is 2996
Or 3004.If there is total flow instruction and oscillation of power, stable oscillation stationary vibration should be being observed 5 seconds to 10 seconds or oscillation of power amplitude
More than 40MW, primary frequency modulation can be exited by engineer station in time, if operations staff has found steam turbine according to unit operating experience
The emphasis such as shaft vibration monitored parameter will enter alarming value (it is recommended that subject to by amount more than 80% alarming value) can calm down vibration in advance
It swings, it is ensured that unit safety turns valve control mode by operations staff's judgement when necessary and stablizes steam turbine valve position.
If e) by frequency or revolving speed microvariations effectively exciting power oscillation, under the experimental condition of the same excitation oscillation,
Pressure correcting coefficient is modified since initial value 1.83 according to dichotomy adjustable strategies, so that set speed adjustment system no longer vibrates most
Big pressure correcting coefficient is der Geschwindigkeitkreis neutrality gain.Gradually change according to 1.83 → 0.915 → 1.3725 → 1.14375
Pressure changeable correction factor, successively investment test, if the excitation oscillation of one sub-value of every modification, the method for calming down oscillation are same as above intertrial interval
It is advisable within 10 minutes after being stablized with unit emphasis monitored parameter (such as steam turbine axis shakes).
F) in the case of having ready conditions, under neutrality gain, excitation system PSS is exited, frequency is re-started and gives step,
The influence that verifying PSS damping characteristic vibrates speed-regulating system.
G) data record.16 channels need AO recording below: the power of the assembling unit, generating unit speed, integrated flow rate instruction output are (total
Flow instruction), CCS turbine main control instruction output, CCS mode next time the side frequency modulation DEH feedforward, high-pressure governing valve displacement commands (GV1
~ GV4), high-pressure governing valve Displacement Feedback (GV1 ~ GV4), main inlet throttle-stop valve (preceding) pressure, pressure, the instruction of total coal amount before governing stage.Preservation becomes
Gesture figure, the pressure correcting coefficient after record modification.
2.2 turbine main controls are revolving speed (or frequency) upset test of basic mode+DEH power close-loop control mode
The power of the assembling unit vibrate when power of the assembling unit control mode be basic mode+DEH power closed loop mode, therefore it is necessary to
Revolving speed (or frequency) upset test is carried out under the mode, is influenced with assessing pressure correcting coefficient to negative damping.
2.2.1 data acquire
With shown in 2.1.1.
2.2.2 test procedure
A) power plant operations staff is in entirely test process, by adjusting boiler combustion status, so that steam turbine DEH power closed loop
Mode output integrated flow instruction is x1%, runs deviation ± 0.5%.In the follow-up test stage, possible exciting power oscillation is comprehensive
Flow can keep at this time boiler combustion status with fluctuation.
B) recovery of control parameter.Each relevant parameter of DEH of thermal control PERSONNEL RECOVERY's afore-mentioned test modification, especially attention pressure
Correction factor is identical as X month X day setting value.
C) power plant's thermal control personnel modify the side DEH primary frequency modulation dead zone under the personnel's monitoring and confirmation for being familiar with control logic
Identical for the dead zone that vibrates with above-mentioned test exciting power, can observe unit by tendency chart excite function by frequency fluctuation
Rate oscillation, is observed the period about 20 minutes.
D) the above process can not effectively exciting power oscillation in the case where, thermal control personnel are in the personnel for being familiar with control logic
Under monitoring and confirmation, the revolving speed rated value as necessary by the side mandatory modification DEH primary frequency modulation slip circuit is 2998 or 3002,
It is disturbed by slip, can observation unit pass through slip wave excitation oscillation of power.If desired revolving speed rated value maximum modification amount
It is 2996 or 3004.
E) regardless of if by frequency or revolving speed microvariations effectively exciting power oscillation, modification pressure correcting coefficient is until no longer
Have excitation lasing capability to stop.Test process calms down oscillating condition and modifies the method for pressure correcting coefficient step-length with TF mode
Under test it is identical.
F) data record.Same 2.1.2.Save tendency chart, the pressure correcting coefficient after record modification.
2.3 determine the unit primary frequency modulation feedforward responding ability test after parameter
The pressure correcting coefficient that above-mentioned test obtains gets the small value under the premise of determining final pressure correcting coefficient, selects machine
The common control model such as TF mode of group, carry out primary frequency modulation feedforward response performance test (the optionally selected section slip of unit
Disturbed), to assess influence of the modification pressure correcting coefficient to primary frequency modulation (power response) performance.
Valve degree of misfitting gain K, pressure correcting coefficient test after the optimization of 3 pitch rating curves
If, need to be according to by practical pitch rating curve determined by 1.2 with current there are relatively large deviation
This actual measurement pitch rating curve is modified.Then carry out above-mentioned 1.1st, the institute in the 2nd content of the test again
There is test.
The test of 4 unit primary frequency modulation performances
According to the steam turbine pitch rating curve after optimization, on this basis, is obtained by the 2nd experimental test and do not swashed
The final pressure correction factor value for sending out oscillation of power, is built in control system.Data re-start unit primary frequency modulation according to this
Performance test.It is recommended that performance test can be carried out respectively in unit TF mode, basic mode+power closed loop mode.
4.1 static test
4.1.1 the logical check that should have
A) be arranged unit speed governor droop be 4%, ± 2 r/min of primary frequency modulation dead zone, ± 9.2 r/min of adjustable range,
± 6% rated power of load adjustment amplitude.
B) steam turbine pitch should have more correct amendment and compensation function, make unit in different load sections, different operations
Primary frequency modulation task can be properly completed under parameter, different pitch apertures.Steam turbine pitch quickly significantly becomes in order to prevent
Change jeopardizes unit safety operation, and the function of the quick primary frequency modulation movement range of unit of limitation DEH can be set.
C) when unit primary frequency modulation is contrary with the varying duty of AGC, generating set should preferentially execute primary frequency modulation
Varying duty task, when 0.05 Hz(revolving speed of mains frequency underfrequency is less than 3 r/min) when should be latched AGC load shedding
Instruction；The instruction of AGC application of load should be latched when mains frequency is higher than 0.05 Hz(revolving speed of rated frequency greater than 3 r/min).
D) when deviation occurs in mains frequency, the initial primary frequency function in the side CCS should cooperate with the side DEH primary frequency modulation to make
With locking is acted on the reversed Load Regulation of primary frequency modulation.When putting into CCS mode, mains frequency deviates rated frequency 0.05
3 r/min of Hz(offspeed), the pressure of locking turbine main control set value of the power retracts circuit.
4.1.2 primary frequency function static test
A) before unit is inactive, using external plus simulation tach signal method, confirm steam turbine valve flow instruction
System acting situation, it is preliminary to confirm whether unit primary frequency function is normal.Primary frequency modulation function is as shown in Figure 2.
B) before unit is inactive, the method for forcing revolving speed using logic, confirmation primary frequency modulation the dead time is correct, confirmation
Whether steam turbine valve flow instruction system acting situation, confirmation unit primary frequency function are normal.
Parameter adjustment and preparation before 4.2 primary frequency modulations are tested
A) data and CRT the work picture recorded needed for test is got ready as required.
B) CCS frequency difference corrective loop can move back in unperturbed throwing online, and DEH primary frequency modulation must not exit.
C) DEH tach signal is calibrated, and control precision reaches 1 r/min.
D) CCS system access mains frequency signal, Measurement Resolution is better than 0.02 Hz, or uses DEH tach signal, essence
Spend 1 r/min.
E) the cues confirmation such as load reference value, frequency, the increase and decrease of CCS load between DEH and CCS system.
F) each control loop confirmation switching undisturbed of DEH and CCS system.
4.3 primary frequency modulation simulation tests
Test method: in DEH(CCS) 4 r/min, 6 r/min, 9.2 r/min ranks are manually added in frequency difference corrective loop
The amplitude of variation that jumps simulates extraneous frequency variation signal；The load point of test carries out frequency when choosing 90%, 75%, 60% rated load
Increase and frequency reduces step test；10 min of stable operation of unit or so, duration of test runs 1~2 before each working condition tests
min；Primary frequency modulation test includes the primary frequency modulation test under single/suitable valve mode, each test can repeat several according to the actual situation
It is secondary.
Recording parameters: active power, main steam pressure and temperature, first stage pressure and temperature, steam turbine pitch aperture, first
Grade metal temperature, separation and thickening, separator outlet pressure, steam flow, feedwater flow, deaerator level, fuel quantity,
Air quantity, steam turbine revolving speed, mains frequency, load reference instruction etc., 1 s of data record and display interval, and with curve and tables of data
The form of lattice provides record as a result, noticing that the precision of institute's recording parameters should be able to meet the requirement of test data analyzer.
4.3.1 it is tested under 90% rated load
CCS+DEH mode of frequency regulation:
A) adjustment unit load is stablized in 90% rated load or so, and parameters are controlled in normal value, and stablize 10
min。
B) boiler master investment is automatic, and DEH investment is remotely controlled and turbine main control investment is automatic, and unit cooperative mode is run
(CCS).
C) frequency difference corrective loop in the side DEH and CCS is put into.
D) in DEH and CCS frequency difference corrective loop it is artificial simultaneously be added 4 r/min revolving speed Spline smoothing amounts (increase and decrease each 1~
2 times), extraneous frequency variation is simulated, the power of the assembling unit and other parameters response condition are observed, until parameter stability.
E) in DEH and CCS frequency difference corrective loop it is artificial simultaneously be added 6 r/min revolving speed Spline smoothing amounts (increase and decrease each 1~
2 times), extraneous frequency variation is simulated, the power of the assembling unit and other parameters response condition are observed, until parameter stability.
F) artificial simultaneously in DEH and CCS frequency difference corrective loop that 9.2 r/min revolving speed Spline smoothings (choosing is done), mould is added
Quasi- external world's frequency variation, observes the power of the assembling unit and other parameters response condition, until parameter stability.
4.3.2 it is tested under 75% rated load
CCS+DEH mode of frequency regulation:
A) adjustment unit load is stablized in 75% rated load or so, and parameters control stablizes 10min in normal value.
B) boiler master investment is automatic, and DEH investment is remotely controlled and turbine main control investment is automatic, and unit cooperative mode is run
(CCS).
C) frequency difference corrective loop in the side DEH and CCS is put into.
D) in DEH and CCS frequency difference corrective loop it is artificial simultaneously be added 4 r/min revolving speed Spline smoothing amounts (increase and decrease each 1~
2 times), extraneous frequency variation is simulated, the power of the assembling unit and other parameters response condition are observed, until parameter stability.
E) in DEH and CCS frequency difference corrective loop it is artificial simultaneously be added 6 r/min revolving speed Spline smoothing amounts (increase and decrease each 1~
2 times), extraneous frequency variation is simulated, the power of the assembling unit and other parameters response condition are observed, until parameter stability.
F) artificial simultaneously in DEH and CCS frequency difference corrective loop that 9.2 r/min revolving speed Spline smoothings (choosing is done), mould is added
Quasi- external world's frequency variation, observes the power of the assembling unit and other parameters response condition, until parameter stability.
4.3.3 it is tested under 60% rated load
CCS+DEH mode of frequency regulation:
A) adjustment unit load is stablized in 60% rated load or so, and parameters are controlled in normal value, and stablize 10
min。
B) boiler master investment is automatic, and DEH investment is remotely controlled and turbine main control investment is automatic, and unit cooperative mode is run
(CCS).
C) frequency difference corrective loop in the side DEH and CCS is put into.
D) in DEH and CCS frequency difference corrective loop it is artificial simultaneously be added 4 r/min revolving speed Spline smoothing amounts (increase and decrease each 1~
2 times), extraneous frequency variation is simulated, the power of the assembling unit and other parameters response condition are observed, until parameter stability.
E) in DEH and CCS frequency difference corrective loop it is artificial simultaneously be added 6 r/min revolving speed Spline smoothing amounts (increase and decrease each 1~
2 times), extraneous frequency variation is simulated, the power of the assembling unit and other parameters response condition are observed, until parameter stability.
F) artificial simultaneously in DEH and CCS frequency difference corrective loop that 9.2 r/min revolving speed Spline smoothings (choosing is done), mould is added
Quasi- external world's frequency variation, observes the power of the assembling unit and other parameters response condition, until parameter stability.
Set speed adjustment system modelling test after 5 adjusting parameters
The test of 5.1 PID control link parameters validations
A) mark for recording load control circuit changes coefficient, individually sets P link, I for power control PID loop section
Link, D link, PID loop section.
B) primary frequency modulation slip signal (adding step signal at slip) is forced, makes the input quantity of power P ID link, generated
The small step signal of 6% rated load, measures the output quantity of PID loop section.The parameter of load control circuit is recognized by test data
(Kp1d, Ki1d, Kd1d), it is by second unit or as unit of minute that integral action, which must indicate,.
C) output of PID loop section is enabled to be set to 0, primary frequency modulation dead zone investment, load feedforward coefficient is operating value, forces primary adjust
The frequency difference input quantity of frequency link generates 6% rated load step, measures the output of CCS flow instruction, passes through flow instruction variable quantity
Load feedforward coefficient is verified, and is recorded.
D) the primary frequency modulation component feed-forward coefficients of the side DEH under CCS mode are measured, and indicate CCS mode next time
Frequency modulation act when flow instruction variation whether include the side DEH primary frequency modulation component.
The test of 5.2 tachometric survey time constants
Apply step (voltage or mA) signal at fluted disc tacho-pulse conversion rear portion with signal generator, it is anti-in DEH revolving speed
The tight preceding place AO output of subtraction point is presented, the amount signal is enrolled simultaneously with oscillograph, differentiates revolving speed sampling delay and time constant filter.
Test content in above 5.2 needs and power plant is confirmed whether have feasibility.
5.3 power measurement time constants and time constant filter test
Apply PT step signal in measurement and control unit speed-regulating system power transducer with relay protection tester, admission PT, CT are handed over
Locate power AO signal before flow and DEH Feedback of Power point are tight, differentiates power samples delay and time constant filter.Above 5.3
In test content need and power plant be confirmed whether have feasibility.
5.4 servo mechanism test
A) if any executing agency's servo card Control system architecture and pid parameter, each lofty tone pitch servo card must be recorded
Pid parameter.
B) under manual mode, 0~100%, 100~0% Spline smoothing is carried out to each governor valve valve bit instruction respectively.
C) under manual mode, on the basis of lofty tone valve bit instruction 35%, positive and negative two sides of lofty tone valve bit instruction are carried out respectively
To step test, amplitude is respectively 20%, 10%, 5%, 2%.
If servo card parameter d) can be set, it is pure proportional component that servo card PID, which should be separately provided, according to step c) weight
Make a 10%, 5%, 2% step test, to recognize servo card ratio enlargement multiple Kp.
Oscillograph records the situation of change of following parameter in whole process: each governor valve valve bit instruction, each high pressure
Adjust valve valve position feedback.According to the test data of acquisition respectively to each lofty tone valve opening direction oil motor time constant, high-pressure governing valve
Maximum opening speed, closing direction high pressure servo-motor time constant, high-pressure governing valve maximum closing velocity, the practical ginseng of servo card PID
Number is recognized.
E) recorder data should perform the no-load voltage ratio conversion work of voltage or mA signal and pid number signal, and verify recording letter
It is number consistent errorless with signal numerical value on practical DCS.
5.5 control system Frequency regulation factors (diversity factor), frequency dead band adjust clipping test
Unit is under simulation model (or being forced by power plant thermal control personnel), simulates the grid connection state of unit.
A) unit load is 85% rated load, and primary frequency modulation investment, unit is respectively in power closed loop and two kinds of power open loop
Following tests is carried out under mode.
B) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 3.6 is simulated respectively on engineer station or speed control channel
R/min, recording powers of laser beam after stablizing, set value of the power, flow instruction, lofty tone valve bit instruction, lofty tone valve position feedback, record end
After revert to 0 r/min, according to test data verify frequency dead band, diversity factor, adjust clipping whether meet the requirements.
C) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 7.2 is simulated respectively on engineer station or speed control channel
R/min, recording powers of laser beam after stablizing, set value of the power, flow instruction, lofty tone valve bit instruction, lofty tone valve position feedback, record end
After revert to 0 r/min, according to test data verify frequency dead band, diversity factor, adjust clipping whether meet the requirements.
The test of 5.6 dynamic disturbances
Dynamic disturbances test unit is in the progress of normal grid connection state, and pitch work is in single valve or suitable valve (with live practical
Subject to the frequent method of operation) mode, unit primary frequency modulation puts into operation.All units in record our factory and bus are needed before dynamic test
The parameters such as the active and reactive of route, line voltage, power factor (PF).Test process, using AO recording combination trend recording Develop Data
Record, AO recording is as shown in table 1, and trend recording is actually added in conjunction with scene.
During this power of the assembling unit vibrates experimental investigation, speed-regulating system models dynamic test also in combination with test above
The the 1st, 2,3,4 test process of content is carried out.
5.6.1 85% rated load open loop is tested
A) unit load is 85% rated load, and primary frequency modulation is put into, and unit carries out following try under power open loop mode
It tests, pre- recording is answered before test, verification oscillograph surveys each channel of record and unit actual parameter should be consistent errorless.
B) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 3.6 is simulated respectively on engineer station or speed control channel
R/min stablizes 2~3 min postscripts and reverts to 0 r/min.
C) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 7.2 is simulated respectively on engineer station or speed control channel
R/min stablizes 2~3 min postscripts and reverts to 0 r/min.
5.6.2 85% rated load closed-loop test (coordinated control)
A) unit load be 85% rated load, primary frequency modulation investment, unit under power closed loop (coordinated control) mode into
Row following tests.
B) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 3.6 is simulated respectively on engineer station or speed control channel
R/min stablizes 2~3 min postscripts and reverts to 0 r/min.
C) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 7.2 is simulated respectively on engineer station or speed control channel
R/min stablizes 2~3 min postscripts and reverts to 0 r/min.
5.6.3 85% rated load closed-loop test (basic mode+DEH power closed loop)
A) unit load is 85% rated load, and primary frequency modulation investment, unit carries out following under DEH power closed loop mode
Test.
B) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 3.6 is simulated respectively on engineer station or speed control channel
R/min stablizes 2~3 min postscripts and reverts to 0 r/minc) simulate steam turbine revolving speed respectively on engineer station or speed control channel
Positive and negative 7.2 r/min of standard deviation (in addition to dead zone) stablizes 2~3 min postscripts and reverts to 0 r/min.
5.6.4 85% rated load closed-loop test (TF mode)
A) unit load is 85% rated load, and primary frequency modulation is put into, and unit carries out following tests under TF mode.
B) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 3.6 is simulated respectively on engineer station or speed control channel
R/min stablizes 2~3 min postscripts and reverts to 0 r/min.
C) steam turbine rotational speed criteria deviation (in addition to dead zone) positive and negative 7.2 is simulated respectively on engineer station or speed control channel
R/min stablizes 2~3 min postscripts and reverts to 0 r/min.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (4)
1. a kind of generating set forced power oscillation checks Optimum Experiment method, it is characterised in that: the following steps are included:
S1: checking a variety of causes that may cause oscillation of power, has finally primarily determined and has caused the main of oscillation of power
Reason；
S2: checking process by setting, based on qualitative analysis, successively carries out quantitative analysis for reason respectively, clear each
Kind reason oscillation participates in the factor；
S3: carrying out optimization for various oscillation reasons respectively, in conjunction with field test, simulation analysis further oscillation-damped source
Head；
S3 the following steps are included:
S31: determining that the valve flow characteristic goodness of fit reduces increased additional gain, and further assessment determines it to negative damping
Percentage contribution；
S32: when the valve flow characteristic goodness of fit is poor, valve flow characteristic is corrected again；
S33: under the premise of the valve flow characteristic goodness of fit is preferable, determine that the speed control channel for causing generating set power to vibrate control is patrolled
Gain critical value is collected, and further assesses and determines its percentage contribution to negative damping；
S34: after all settings are fixed, unit primary frequency modulation performance is reappraised；
S35: in conjunction with set state, carry out the test of set speed adjustment system dynamic modeling；
S36: in the subsequent shutdown of unit, carry out set speed adjustment static system modeling；
S31 the following steps are included:
S311: by adjusting each valve position under accidental conditions, realize each high pressure valve gate valve bit instruction close to function
Rate oscillation starting point value；
S312: it keeps existing valve flow characteristic setting numerical value constant, tests unit in sequential valve operation, turned in high pressure valve
It is more than point place numerical value, following section carry out test respectively: corresponding total flow instructs progress ± 5% rank of valve control mode valve flow
Load variations situation when jump；
S313: the load variations situation in the range of more several total flow instructions ± 5% determines wherein discharge characteristic matching degree
The corresponding total flow instruction in the discharge characteristic inflection point position of a worst high pressure valve is the point of subsequent perturbations test；
S314: big if there is some region internal loading variable quantity, high pressure valve discharge characteristic is surveyed when Ying Jinhang sequential valve operation
Examination, if more consistent in trial stretch internal loading situation of change, trial stretch is continued to expand, and determines total stream in non-inflection point
Load variations situation under amount instruction, is such as not much different with the load variations situation at inflection point, then judges valve flow characteristic pair
The influence of oscillation of power is smaller, and crime scene discussion decides whether to carry out high pressure valve discharge characteristic when sequential valve operation and tests.
2. generating set forced power oscillation according to claim 1 checks Optimum Experiment method, it is characterised in that: S32
The following steps are included: bent to obtain practical valve flow characteristic of each high pressure valve of unit in sequential valve operation by test
Line；Specific test procedure is as follows:
S321: unit is adjusted main steam turbine parameter to rated value with sequential valve operation before testing, and is guaranteeing first stage pressure
Total flow instruction gradually not being risen to 100% under the premise of superpressure, realizes 4 valve standard-sized sheets, 4 valve is GV1, GV2, GV3, GV4,
Such as can not standard-sized sheet with current aperture be test initial value, record needed for test parameters；
S322: confirmation CCS remote control mode exits before test, and primary frequency modulation exits, and DEH power control circuit exits；
S323: excision Valves ' Overlap makes former valve flow characteristic curve become non-overlapping line of writing music；
S324: unit sliding pressure operation mode exits, and main steam turbine pressure is controlled according to level pressure-sliding pressure operation curve, manually controls
Successively decrease load, is operated by operations staff in operator station, with 2MW/min rate of reducing load load down, until reducing to 300MW；
S325: during test, every reduction load 30MW, stable operation of unit 10min, until 50% load terminates, in following operating condition
Stable operation 20min:(1) GV4 closes entirely, GV1, GV2, GV3 standard-sized sheet；(2) GV4 is closed entirely, GV1, GV2 standard-sized sheet, GV3 gradually close to
Load, flow start to change；(3) GV3, GV4 are closed entirely, GV1, GV2 standard-sized sheet；(4) GV3, GV4 are closed entirely, and GV1, GV2 are gradually closed
It closes to load, flow and starts to change；
S326: after the test, the rating curve degree of overlapping under sequence valve mode in DEH configuration is restored；
S327: drawing order valve runs valve flow characteristic curve.
3. generating set forced power oscillation according to claim 1 checks Optimum Experiment method, it is characterised in that: S33
The following steps are included:
S331: power plant operations staff stablizes unit master control output integrated flow in entirely test process by adjusting sliding pressure biasing
Instruction is x1%, runs deviation positive and negative 0.5%；In the follow-up test stage, if exciting oscillation of power, integrated flow rate can be with wave
It is dynamic, not adjustment sliding pressure value intervention at this time；
S332: temporary withdrawal primary frequency modulation, Later convalescent have each relevant parameter of the DEH of modification；
S333: under the personnel's monitoring and confirmation for being familiar with control logic, the modification side DEH primary frequency modulation dead zone is power plant thermal control personnel
Initial value half puts into primary frequency modulation, and can observe unit by tendency chart be vibrated by mains frequency fluctuation exciting power, observes
Period about 20 minutes, if non-exciting power oscillation primary frequency modulation dead zone continues to zoom out half, until minimum 0.005Hz stops；
S334: the above process can not effectively exciting power oscillation in the case where, pass through the primary frequency modulation slip of the side mandatory modification DEH
The revolving speed rated value in circuit is 2998r/min or 3002r/min, is disturbed by slip, and can observation unit be fluctuated by slip
Exciting power oscillation；If desired revolving speed rated value maximum modification amount is 2996r/min or 3004r/min；If there is total flow
Instruction and oscillation of power should observe stable oscillation stationary vibration 5 seconds to 10 seconds or oscillation of power amplitude is more than 40MW, exit in time once
Frequency modulation, if operations staff according to unit operating experience, it is found that the emphasis monitored parameter including turbine shaft vibration will enter report
Alert value, then calm down oscillation in advance, it is ensured that unit safety turns valve control mode by operations staff's judgement when necessary and stablizes steam turbine valve
Position；
S335: if by frequency or revolving speed microvariations effectively exciting power oscillation, under the experimental condition of the same excitation oscillation, pressure
Power correction factor is modified since initial value 1.83 according to dichotomy adjustable strategies, so that the maximum that set speed adjustment system no longer vibrates
Pressure correcting coefficient is der Geschwindigkeitkreis neutrality gain, i.e., is altered in steps according to 1.83 → 0.915 → 1.3725 → 1.14375
Pressure correcting coefficient, successively investment test, if the excitation oscillation of one sub-value of every modification, the method for calming down oscillation are same as above, intertrial interval
It is advisable within 10 minutes after being stablized with unit emphasis monitored parameter.
4. generating set forced power oscillation according to claim 3 checks Optimum Experiment method, it is characterised in that: facing
Under boundary's constant gain, excitation system PSS is exited, frequency is re-started and gives step, verifying PSS damping characteristic shakes to speed-regulating system
The influence swung.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710618287.8A CN107317344B (en) | 2017-07-26 | 2017-07-26 | A kind of generating set forced power oscillation investigation Optimum Experiment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710618287.8A CN107317344B (en) | 2017-07-26 | 2017-07-26 | A kind of generating set forced power oscillation investigation Optimum Experiment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107317344A CN107317344A (en) | 2017-11-03 |
| CN107317344B true CN107317344B (en) | 2019-09-20 |
Family
ID=60174961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710618287.8A Active CN107317344B (en) | 2017-07-26 | 2017-07-26 | A kind of generating set forced power oscillation investigation Optimum Experiment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317344B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110970084B (en) * | 2018-09-29 | 2021-09-07 | 杭州广立微电子股份有限公司 | Method for quickly correcting SRAM test voltage and SRAM test circuit |
| CN110365028B (en) * | 2019-06-28 | 2021-01-29 | 国网福建省电力有限公司 | Method for judging influence of primary frequency modulation on power oscillation |
| CN110571798B (en) * | 2019-09-06 | 2020-08-11 | 贵州电网有限责任公司 | Dynamic measurement method for power feedback first-order inertia time constant of steam turbine generator unit |
| CN110707731B (en) * | 2019-11-22 | 2023-12-26 | 润电能源科学技术有限公司 | Method, device and equipment for suppressing active power oscillation of thermal power generating unit |
| CN111042874B (en) * | 2019-12-17 | 2023-08-22 | 浙江浙能技术研究院有限公司 | Device and method for preventing low-frequency power oscillation of steam turbine generator unit |
| CN112282867B (en) * | 2020-10-15 | 2023-06-27 | 华能重庆珞璜发电有限责任公司 | Method for solving problem of vibration of EH oil pipeline caused by primary frequency modulation of steam turbine |
| CN114810227B (en) * | 2022-03-09 | 2023-10-03 | 贵州电网有限责任公司 | Method for measuring turbine body parameters based on closed loop mode |
| CN116542510B (en) * | 2023-07-05 | 2023-10-13 | 江苏航运职业技术学院 | Optimal configuration method for ship electrical debugging process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3347549A1 (en) * | 1983-12-30 | 1985-07-11 | Siemens AG, 1000 Berlin und 8000 München | Method and device for forming a network-synchronous oscillation |
-
2017
- 2017-07-26 CN CN201710618287.8A patent/CN107317344B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3347549A1 (en) * | 1983-12-30 | 1985-07-11 | Siemens AG, 1000 Berlin und 8000 München | Method and device for forming a network-synchronous oscillation |
Non-Patent Citations (1)
| Title |
|---|
| 1000MW超超临界机组低频振荡原因分析;朱亚清;《南方电网技术》;20170331;第11卷(第3期);参见65-73页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107317344A (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107317344B (en) | A kind of generating set forced power oscillation investigation Optimum Experiment method | |
| Mansoor et al. | Reproducing oscillatory behaviour of a hydroelectric power station by computer simulation | |
| Pereira et al. | A new thermal governor modeling approach in the WECC | |
| EP2910743B1 (en) | Method and system for optimization of combined cycle power plant | |
| CN107818424B (en) | Unit operation safety adaptability evaluation method in primary frequency modulation performance test of thermal power generating unit | |
| CN102563599A (en) | Coordinative control method for supercritical unit boilers quickly adaptive to change of heat value of fire coal | |
| CN107966912A (en) | A kind of embedded control object model analogy method of hydrogovernor | |
| CN109308390A (en) | It send receiving end power grid wind/luminous energy to combine with Hydropower Unit and adjusts analogue system and method | |
| CN110492497A (en) | A kind of generating set power oscillation error comprehensive diagnosis method and system | |
| Jassmann et al. | An innovative method for rotor inertia emulation at wind turbine test benches | |
| CN103455028A (en) | Static testing and calibrating method for PID link of control system of wind turbine generator | |
| CN105912779A (en) | Method for identifying parameters of turbine speed-regulating system model | |
| CN108061656A (en) | A kind of method for checking aero-engine novel integrated electronic controller | |
| Xiao et al. | Experimental evaluation of extremum seeking based region-2 controller for CART3 wind turbine | |
| EP2647811A1 (en) | Gas turbine control device and power generation system | |
| CN103136630B (en) | Method and system for the operation that directs a factory | |
| CN106354999B (en) | A kind of inline diagnosis method of fired power generating unit load oscillation and sudden load change failure | |
| CN110705098B (en) | Online checking method and system for prime mover and speed regulating system model thereof | |
| CN109869198A (en) | One kind being based on the modified steam turbine life-cycle high pressure cylinder efficiency monitoring method in valve position | |
| CN109116235A (en) | Hydropower Unit regulation performance test method and system | |
| EP3058203B1 (en) | Method for regulating and/or controlling the manipulated variables of a gas turbine in a combustion system | |
| Ahamed et al. | Reinforcement learning controllers for automatic generation control in power systems having reheat units with GRC and dead-band | |
| Khalili et al. | Mathematical modeling of a generic steam turbine during power grid dynamical studies | |
| Hajagos et al. | Guidelines for generator stability model validation testing | |
| Piwko et al. | Field testing and model validation of wind plants |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |